Gear casing



FIG. 1 is a perspective view of a first embodiment of a gear casing, showing our new design;

FIG. 2 is a right-side elevational view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a left-side elevational view thereof;

FIG. 8 is a perspective view of a second embodiment of a gear casing according to the invention;

FIG. 9 is a right-side elevational view thereof;

FIG. 10 is a front elevational view thereof;

FIG. 11 is a rear elevational view thereof;

FIG. 12 is a top plan view thereof;

FIG. 13 is a bottom plan view thereof; and,

FIG. 14 is a left-side elevational view thereof.

The portions of the gear casing shown in broken lines form no part of the claimed design. 

The ornamental design for a gear casing, as shown and described. 